Hi Rahul,
On 16-Jan-12 09:00, rahul yadav wrote:
> If i see it in this way: "ACK is used to stop re-transmission of 200 ok.
> Similarly PRACK is used to stop re-transmission of provisional responses".
> So both should be treated equally ?
>
No.
The finality may be the same but different rules are used.
ACK is part of the INVITE-Transaction.
PRACK is "a" normal SIP message like BYE, therefor
Non-Invite-Transaction rules are used...
> Sorry for my ignorance, i am still not clear why PRACK needs 200 ok ?
>
As stated previously PRACK is a new transaction which comes to
completion i.e. when its final response (200) is received...
Cheers,
Alain
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3072D/146D10DE 2011-09-29 Alain Totouom <totouom at gmx.de>
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